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The nearer point of hypermetropic eye is...

The nearer point of hypermetropic eye is 40 cm. The lens to used for its correction should have the power

A

`+1.5 D`

B

`-1.5 D`

C

`+2.5 D`

D

`+0.5 D`

Text Solution

Verified by Experts

The correct Answer is:
C
Hypermetropia is corrected by using convex lens.
Focal length of lens used `f = + ("defected nera point")`
`f = +d = +40 cm`
`:. "Power of lens" = (100)/(f("cm")) = (100)/(+40) = +2.5D`
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